Insulator supporting bracket



. Aug. 22, 1950 L. J. OLIVIER 2,519,694

INSULATOR SUPPORTING BRACKET Filed June 11, 1947 2 Sheets-Sheet 1INVENTOR KW} W 21 Z, WWPM A 1950 L. J. OLIVIER 2,519,694

INSULATOR SUPPORTING BRACKET Filed June 11, 1947 2 Sheets-Sheet 2 2, 67WWYLW W Patented Aug. 22, 1950 UNITED STATES PATENT OFFICE INSULATORSUPPORTING BRACKET Leon J. Olivier, New Orleans, La. I I

Application June 11, 1947, Serial No. 753,833

3 Claims. 1

This invention pertains to an improved form of bracket or support forinsulators, and more particularly, to an improved form of a wirestringing, sagging, and supporting bracket.

In my Patent No. 2,302,883 entitled Method of Stringing and saggingWires and Apparatus for Use Therein, I have shown a bracket of thegeneral type involved. The bracket of the present invention provides anew and improved form of pivot support for the insulator pin.

In employing a bracket of the type herein involved, see particularlyFigure 6 of the drawings, an insulator is loosely mounted on a spindleor bolt which is adapted, in an outwardly or horizontally extendingposition, to receive a cable or wire and to permit the wire to beuniformly sagged between poles. After the proper sagging has beenefieoted, the wire may be secured to the insulator in the manner shownand the insulator is moved to a detachably looked vertical or angularposition, such as shown in Figure 2 or the drawings. To remove the wire,the procedure is reversed.

In a bracket of this type, a suitable form of pivot mounting for theinsulator supporting spindie or pin must be provided such that theinsulator may be moved from one angular position to another, that thespindle may be detachably locked in its vertical position with respectto the bracket, that the spindle may be released from its lockedvertical position and moved to a horizontal position, and that thespindle may be securely supported in the horizontal position when a wireor cable is being mounted on the insulator or removed therefrom.

It has thus been an object of my invention to provide a new and improvedform of insulator bracket.

A further object has been to provide an insulator bracket having asimplified and improved type of pivot mounting for an insulatorsupporting pin or spindle.

A still fru'ther object of my invention has been to provide a lessexpensive and simplified form of bracket of the type involved which willprovide for different angular positioning of an insulator pin orspindle.

These and other objects of my invention will appear to those skilled inthe art from the drawings, specification and claims.

In the drawings, Figure 1 is a side view in elevation of a bracketemploying my invention. A spool type of insulator is shown rotatablymounted on the bracket, and different angular positions of the insulator25 and its associated supporting pin or spindle 20 have been indicatedby A, B, and C. The locked vertical position is indicated by the dottedlines of A, an unlatched intermediate position has been illustrated bythe dotted lines of B, and a horizontal wire mounting or (removingposition is shown by the full lines o Figure 2 is a side view inelevation showing the spindle at the position A of Figure 1; I

Figure 3 is a front sectional view taken along. the line III-III ofFigure 2;

Figure 3A is a side View of a may be employed in connection of myinvention.

Figure 4 is a top plan view of the bracket of Figures 1 and 2;

Figure 5 is a horizontal sectional view taken along the line V-V ofFigure 2;

Figure 6 is a perspective view in side elevation of the bracket of myinvention and showing the cotter pin that: with the bracket.

wire receiving position;

Figure 7 is a perspective view in elevation of a multiple insulatorsupporting bracket employmg my invention.

Referring particularly to Figures 1 to 6, inclusive, the bracket of mypresent invention has a base or normally vertically extending backmember it! that may be provided with an opening H and suitable pressedout portions [2 for receiving a mounting bolt. A pair of outwardly andnormally horizontally-extending spaced-apart supports [3 and H provideupper and lower arm members for an insulator supporting spindle, pin, orbolt 20.

The bracket of my present invention is similar in many respects to thebracket disclosed by the aforementioned patent. It includes a base orback member l9 that may be and preferably is provided with abolt-receiving aperture II and outwardly pressed lugs l2 for engaging ahead of a bolt extending through the aperture II. The base It] carries apair of insulator-supporting arms l3 and ii which extend outwardlytherefrom in parallel spaced relationship. When the bracket is in usethe base 10 normally extends vertically and the arms l3 and H extendhorizontally, with the arm 53 located vertically above the arm 17. Thearms are so spaced that the insulator supported by the bracket isnormally located between them resting on the arm 11.

The upper arm i3 is similar in structural details to the correspondingarm of the bracket disclosed by said Patent 2,302,883. The outer endthereof is provided with a spindle receiving slot l6, thus bifurcatingthe free end of the arm and forming spaced prongs M which extend inparallel relationship. Their outer ends are shaped so as to form akeeper for the head of an insulator pin or spindle 263 which forms acomponent part of the bracket. This is accomplished by so bending theouter end of each prong l4 that it extends upwardly, but Slightlybackwardly and terminates in a forwardly inclined upwardly projectingportion l5.

The slot ill is slightly wider than the diameter of the spindle 2t andthe inner end thereof is curved to correspond to the curvature of thecylindrical surface of the spindle engaged by it. The upwardly turnedends of the prongs M are adapted to engage the rectangular head .22 ofthe spindle 26 when the spindle is in place within theslot l6 and thehead portion 22 thereof bridges and rests on the prongs it. When thespindle is in this position it is latched or locked to the arm l3, bythe latch and keeper relationship of the head 22 and the up-turnedportions of the prongs E4.

Whilethe lower arm ll of my improved bracket corresponds in function tothat of the corresponding arm of the bracket disclosed by m abovementioned patent, it is of simpler form, requires less metal in itsformation and contributes to simplification of the bracket in otherrespects. As shown the arm I7 is provided with a spindlereceivingaperture it which is located vertically below the slot i6, is alignedtherewith and is adapted to cooperate with that aperture in positioningthe spindle 29 when the spindle is in its normal upright position. Thearm if is provided with, or so formed as to provide a downwardlyeXtending, substantially U shaped loop or spindle-receiving saddle E8,the upper surface of which is a continuation of the upper surface of themajor portion of the arm but is looped downwardly so as to form aconcave spindle-engaging surface which extends horizontally andlongitudinally of the arm and also below the major portion of the arm adistance substantially equal to the diameter of the shank portion of thespindle 20.

The relationship of the saddle l8 to the major portion of the arm ll issuch that the aperture I9 is, in effect, transformed into a slot,although the inner edge it of the downwardly off-set portion or saddleit constitutes a bounding edge for the aperture. It will be noted thatthis edge iii of the aperture extends transversely across the arm, islooped below the upper surface of the arm but, nevertheless, forms acontinuation of the remaining portion of the edge of the aperture H],which is curved to conform to the curvature of the cylindrical portionof the spindle 20 and is located immediately below and in alignment withthe correspondingly curved portion of the edge of the slot I6.

As shown in the drawings, the lower end of the spindle 20 extendsthrough the aperture 19 and the spindle is loosely or pivotally securedto the arm I! by reason of the fact that a cotter pin extends throughthe portion, thereof located below that arm. An aperture extendsdiametrically through the lower portion of the spindle but is spacedfrom the lower end thereof, and a double hump cotter pin 2! is locatedtherein. The cotter pin is of such length asto prevent the removal ofthe spindle from the arm [7 although the cotter pin is so located as topermit free movement of the spindle from the position A of Figure 1through the position B to the position 4 C of that figure. In the lastmentioned position the cotter pin 2| may engage the edge [8' of thesaddle to position the spindle with relation to the saddle and a portionof the spindle, located between the pin 2! and the head 22, rests in thesaddle, whereas the portion of the spindle between its normally lowerend and the cotter pin rests against the lower face of the arm ll. Whenthe spindle is so positioned it constitutes a cantilever support for theinsulator carried by it and is held against lateral displacement by thelateral, upwardly sloped walls of the saddle 18.

In the normal or upright position of the spindle 2B the head portion 22thereof is detachably latched to the upper arm is by the latch andkeeper relationship between the head portion 22 and the upwardly turnedends of the prongs Id. In this position the spindle is held by thecooperation of the inner edge [8' of the saddle, the curved edge of theaperture 59, the curved edge of the slot J6 and the upwardly turnedportions of the prongs it. To unlock the spindle from this position itis forced upwardly so that its head 22 moves upwardly beyond theupwardly and inturned portions of the prongs it. The relationshipbetween the parts is such that during this upward movement the upwardlyextending prongs are flexed to permit the head to slide past them.

It will be noted that the structure of the lower arm I! as heredisclosedmakes it possible to employ aspindle so having a cylindrical shankportion from the head end to the opposite end thereof. Such spindles arecheaper and more effective in operation than spindles such as are shownin my aforementioned patent and to this extent my improved bracketcontributes to a further simplification of the insulator bracket as awhole. It will also be apparent that the arrangement of the saddle i8disclosed, provides a more rugged and stiffer structure than isdisclosed by said patent, with the result that each insulator spindlewhen functioning as a cantilever as disclosed in Figure 6 is capable ofsustaining a relatively heavy load without the danger of distorting thebracket or any portion thereof.

In Figure 7, I have shown a multiple insulator bracket embodying myinvention wherein a plurality of pairs of spaced-apart arm members l3and Il are positioned in a spaced-apart relationship along the basemember Ill.

As shown particularly in Figures 1 and 2, the cotter pin 2! ispositioned to extend through the spindle 2E, transversely of thebracket. The location of the pin 2i is preferably behind or to one sideof the curved loop portion i8, and adjacent to such portion, in orderthat the spindle iiilfmay be raised and pivoted as indicated by the dotand dash lines of Figure l. The cotter pin 21, as shown by the position0 of Figure 1, lies transversely. adjacent'to the bottom surface of thearm I! when the spindle 2!: is in its horizontally .ex-' tendedposition; it thus may serve to supplement the supporting action of thelower end of the spindle when the spin-dle is in its horizontalposition.

Although for the purpose of illustrating my invention I have shownaparticular form of a bracket, it will be apparent to those skilled inthe art that various subtractions'addi-tions and revisions may be madethereto without departing from its spirit and scope as indicated by theappendedclaims.

WhatI claim is:

1. An insulator-supporting bracket including a vertically extendingbase, upper and lower horizontall extending arms secured thereto and aninsulator-supporting spindle pivotally connected to the lower of saidarms and movable from a horizontal position to a vertical position inengagement with the upper arm to position the insulator carried therebbetween said arms; characterized by said lower arm has aspindle-receiving aperture formed therein adjacent the free end thereofand is provided with a transversely extending downwardly looped,U-shaped saddle forming a closure for said aperture at the free end ofthe arm side thereof and having a concave spindle-engaging upper surfaceconstituting a continuation of the upper surface of the major portion ofsaid lower arm and extending horizontally longitudinally of said arm anddownwardly below the major portion of said arm an amount substantiallyequal to the diameter of the portion of the spindle engaged thereby.

2. An insulator-supporting bracket including a vertically extendingbase, upper and lower horizontally extending arms secured thereto and aninsulator-supporting spindle pivotally connected to the lower of saidarms and movable from an extended horizontal position to a verticalposition in engagement with both the lower and upper arms to positionthe insulator carried by said spindle between said arms; characterizedby that Said lower arm has a spindle-receiving aperture formed thereinintermediate the ends thereof and is provided with a transverselextending, downwardly looped U-shaped saddle constituting an extensionof said arm and having a concave spindle-receiving upper surface forminga continuation of the upper surface of the major portion 6. of said arm,extending longitudinally of said arm and below the major portion thereofa distance substantially equal to the diameter of th portion of saidspindle engaged thereby.

3. An insulator support bracket including a base portion, upper andlower arms formed integrally therewith and extending at right anglesthereto and an insulator-supporting spindle movably connected to thelower of said arms and movable from a horizontal position longitudinallyof such arm to an upright position in engagement with both the lower andupper arms, wherein the insulator carried thereby is located betweensaid arms; characterized by that said lower arm has a spindle-receivingaperture formed therein in= termediate the ends and sides thereof and isprovided with a downwardly off-set, transversely extending portionlocated immediately adjacent said aperture having a concavespindle-receiving sur face forming a continuation of the upper surfaceof the major portion of the bracket and extending below the majorportion of said arm a distance substantially equal to the diameter ofsaid spindle, with the inner edge of said ofi-set portion constituting adownwardly looped portion of the edge of said aperture.

LEON J. OLIVIER.

REFERENCES CITED UNITED STATES PATENTS Name Date Olivier Nov. 24, 1942Number

